1 package antlr;
2
3 * <b>SOFTWARE RIGHTS</b>
5 * <p>
6 * ANTLR 2.5.0 MageLang Institute, 1998
7 * <p>
8 * We reserve no legal rights to the ANTLR--it is fully in the
9 * public domain. An individual or company may do whatever
10 * they wish with source code distributed with ANTLR or the
11 * code generated by ANTLR, including the incorporation of
12 * ANTLR, or its output, into commerical software.
13 * <p>
14 * We encourage users to develop software with ANTLR. However,
15 * we do ask that credit is given to us for developing
16 * ANTLR. By "credit", we mean that if you use ANTLR or
17 * incorporate any source code into one of your programs
18 * (commercial product, research project, or otherwise) that
19 * you acknowledge this fact somewhere in the documentation,
20 * research report, etc... If you like ANTLR and have
21 * developed a nice tool with the output, please mention that
22 * you developed it using ANTLR. In addition, we ask that the
23 * headers remain intact in our source code. As long as these
24 * guidelines are kept, we expect to continue enhancing this
25 * system and expect to make other tools available as they are
26 * completed.
27 * <p>
28 * The ANTLR gang:
29 * @version ANTLR 2.5.0 MageLang Institute, 1998
30 * @author Terence Parr, <a href=http://www.MageLang.com>MageLang Institute</a>
31 * @author <br>John Lilley, <a href=http://www.Empathy.com>Empathy Software</a>
32 */
33 class TokenRefElement extends GrammarAtom {
34
35
36 public TokenRefElement(Grammar g, Token t, boolean inverted, int autoGenType) {
37 super(g, t, autoGenType);
38 not = inverted;
39 TokenSymbol ts = grammar.tokenManager.getTokenSymbol(atomText);
40 if (ts == null) {
41 g.tool.error("Undefined token symbol: " + atomText, t.getLine());
42 } else {
43 tokenType = ts.getTokenType();
44 }
45 line = t.getLine();
46 }
47 public void generate() {
48 grammar.generator.gen(this);
49 }
50 public Lookahead look(int k) {
51 return grammar.theLLkAnalyzer.look(k, this);
52 }
53 }
54